Feeding mechanism for sewing machines



D.S.SEYMOUR. FEEDING MECHANISM FOR S EWING MACHINES.

APPLICATION FILED MAY 4, 1918.

Patented May 2, 1922.

10 SHEETSSHEE! I.

lmumdoz D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES;

v APPLICATION FILED MAY 4| I918.

Patented f May- 2, 1922.

IUSHEETS-SHEET 2.

I m GD awuewlioz 'D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY 4, I918.

Patented May 2, 1922.

HLLIIIIIHH'I 0. s. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY 4, I918.

Patented. May 2, 1922.

Swan nfo'a D. S. SEYMOUR.

FEEDING MECHANlSM FOR SEWING MACHINES.

APPLKEATION FILED MAY 4. 1918- 1,414,591, tent d. MayZ, 1922.

19 SHEETS SHEE? 5 gnomtz dl g 0. SQSEYMOUR. FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION 'nuap MAY 4. 1918.

Patented May 2, 1922.

,IU SHEETS-SHEET 6.

D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY 4| 1918. 1,41%,591 Patented May 2, 1922.

10 SHEETSSHT r.

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Jwuc n fox attorneys D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLICATION FILED MAY 4. 1918.

1A1 4,51 Patented y 2,1922

10 SHEETSSHEEY 8.

anuenioz D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

' APPLICATION FILED MAY 4. 1918.

1,414,591., Patented May2,192*2;

10 SHEETSSHEET 9.

D. S. SEYMOUR.

FEEDING MECHANISM FOR SEWING MACHINES.

APPLECATION FILED MAY 4/1918.

Patented May 2, 1922.

10 SHEETSSHEET l0.

unoumqs To all whom it'may concern:

NITED STATES PATENT OFFICE.

DUDLEY S. SEYMOUR, OF OAK PARK, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORI POBATION OF ILLINOIS.

FEEDING- ME GI-IANISM FOR SEWING MACHINES.

Let-14,591.

Specification of Letters Patent.

Patented May 2, 1922.

- Application filed May-4, 1918. Serial No. 232,523. 7

Be it known that I, DUDLEY S. SEYMOUR, a citizen of the United States, residing at Oak Park, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Feeding Mechanisms for Sewing Machines, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in sewing machines and more particularly to a feeding mechanism for a carried by the same bracket which supports the lower feed dog and which moves the feed dogs back and forth, said upper feed dog having a movement on said bracket which is'opposed to the movements of the bracket carrying the lower feed dog into engagement with the material.

Still another object of the invention .is to provide feeding mechanism of the above character wherein the bracket supporting the feed dogs is pivoted to swing on a rocker and the pivotal point of said bracket at the time the dogs are being moved to feed thefabric is substantially coincident with the center of curvature of the cloth plate over which the material passes.

A still further'object of the invention is to provide a feeding mechanism of the above character wherein the upper feed dog is mounted to slide on a cross head carried'by the bracket and said cross head is yieldingly moved to bring the feed dog into engagement with the material while it is positively raised to lift the feed dog from the material.

A still further objectof the invention is to provide a feeding mechanism of the above character with which is associated a presser foot and devices for lifting the presser footfrom the fabric during the feedingstroke of the feed dog.

A still further object of the invention is to provide a feeding mechanism having a feed dog, one section of which from front to back is provided with feed teeth while another section thereof from front to back is provided with knurls.

Still. another object of the invention is to provide a sewing machine having a feed dog of the character specified above and a binding guide so disposed relative to the feed dog as to direct a binding stri underneath the knurled portion of the fted dog while the body of the article having the binding strip applied thereto is directed so as to be engaged by the feed dog havingv teeth. I

These and other objects will in part be obvious and will inpart be hereinafter more fully described.

In the drawings which show by way of illustration one embodiment of the invention:

Figure 1 is a front View of a-machine having my improvements embodied therein;

Fig. 2 is an end view of the same;

- Fig. 3 is a detail showing the presser foot lifter in its lowermost positon;

Fig. 4 is a plan view of a portion of the work support showing a portion of the upper feed, the presser foot and the binding guide;

Fig. 5 is a view partly in plan and partly in section showing the .work supporting cylinder, the feeding. mechanism therein, the

top feeding mechanism, the looper and the presser foot, also the needle in section; Fig.- 6 is a sectional view lengthwise of the cylinder and through certain parts of 'the upper feeding mechanism, showing the lower feeding mechanism in top plan;

Fig. -7 is a sectional view on the line 77 of Fig. 6;v

F'g. 8, is a sectional view on the line 88 of Fig. 5;

Fig. 9 is a sectional view on the line 9- -9 I Fig. 10 is an end view of the work sup; porting cylinder, a part of the standard and an end view of the feeding mechanisms 7 showing the feed dogs in position engage and the presser foot while the article is being stitched;

Fig. 14c is a sectional view on the l1ne'm of Fig. 13;

Fig. 15 is a detail in section showing the support for the upper feed dog and the upper feed dog in side elevation;

Fig. 16 is a side view of the presser foot on an enlarged scale.

Fig. 17 is a perspective view of certain of thri1 feed elements, the parts being detached; an

Fig. 18 is a perspective view of a portion of the feed rocker.

My invention is directed to a feeding mechanism for a sewing machine and more particularly to a feeding mechanism for a sewing machine having a cylinder work support which extends from a standardv carrying the overhanging arm in which the needle bar reciprocates. The needle and the feeding mechanism is operated by a main shaft which extends through the standard and lengthwise of the cylinder work support. Located within the cylinder is a feed rocker and mounted on this feed rocker is a bracket which carries a lower feed dog and also an upper feed dog. The bracket is swung by connections with-the main shaft for imparting feed strokes to the feed dogs. The upper feed dog is mounted'on a cross head which slides on this bracket. The feed rocker is oscillated for raising and lowering the bracket and the lower feed dog and devices areoperated .by this feed rocker for raising and lowering the cross head, the cross head moving downwardly as the bracket moves upwardly.v 'Thecross head is yieldingly moved by a spring so as to bring the upper feed dog into engagement with the material when the means for raising the cross head is lowered to permit the downward movement thereof. Both the upper and lower feed dogs are curved to conform to the shape of the throat plate which is con centric to the axis of the work supporting cylinder. The center of the pivotal connection between the bracket and feed rocker when the parts are positioned for the feeding stroke is'substantially coincident with the center of the cylinder which brings about a proper timing of the feed dogs and iami a movement thereofto correspond to the shaping of the throat plate. The material is held on the work support by. a presser foot which is raised positively just previous to each feeding stroke The upper feed dog is, formed with a toothed section extending from front to rear and with a knurled section also extending from front to rear and disposed at one side of the toothed section.

The machine is especially adapted for applying a binding to a gauntlet or the like and is equipped with a binding guide disposed relative to the feeding mechanism so as to direct the binding underneath the knurled portion of the feed dog while the gauntlet is directed so as to be engaged by the toothed section of the feed dog.

Referring more in detail to the drawings I have shown my invention as applied to a sewing machine having a supporting base 1 carrying a standard 2 on which is mounted an overhanging arm 3. A needle bar a reciprocates in the overhanging arm and is provided with a needle 5. The needle bar .1s reciprocated by a lever 6 which is connectedto the needle bar by a link 7. The needle lever is oscillated by an eccentric strap 9 co-operating with an eccentric on the main shaft 10. Projecting from the standard 2 is a cylinder work support 11. The 'main shaft 10 extendsthrough the standard and lengthwise of the cylinder which supports thematerial and is mounted in suitable bearings therein.

The work supporting cylinder 11 is vided with a throat plate 12 which is curved about a center coincident with the center or longitudinal axis of the cylinder. The material is fed across the work support, that is, in a plane at right angles to the axis of the main shaft. In order to accomplish the feeding of the material I have provided a lower feeding mechanism having,

a lower feed dog 13- and an upper feeding mechanism having an upper feed dog 14. The lower feed dog '13 is clamped to a bracket 15 which is pivoted on a shaft 16 fixed to a feed rocker 17. The feed rocker 17 is fixed to a shaft 18 mounted in suitable bearings extending lengthwise in the work supporting cylinder. The shaft 18 at its extreme inner end carried an arm 19, (see Figs. 5 and 7). Mounted on the main shaft 10 is an eccentric 20. Cooperating with this eccentric is an eccentric strap 21 which is connected to the outer end of the arm '19. As the main shaft 10 rotates this eccentric will cause the shaft 18 to oscillate and the oscillation of the shaft 18 will cause the feed rocker 17 to oscillate and the shaft 16 connecting the feed rocker and the bracket 15 to raise and lower. This up and down movement of the bracket 15 causes the lower feed dog 13 to engage the material. The bracket 15 is formed with proan outwardly projecting arm 22 which carries a pin 23. Mounted on the end of the shaft 10 is a disk 24 which is provided with a radial slot 25. Adjustably mounted in this radial slot is a crank pin 26 which engages a link 27. The link 27 is provided with a bearing 28 which receives the pin 23. As the main shaft 10 rotates this crank pin 26 through the link 27 and the arm 22 will oscillate the bracket 15 about the pivot shaft 16. This oscillation of the bracket causes the feed dog 13 to move back and forth and this imparts the feeding stroke to the feed dog and the return stroke when the feed dog is out of engagement with the material.

The bracket 15 is also formed with a vertically extending member 29. The upper feed dog 14 is carried by an arm 30 which extends laterally from a cross head 31. The arm 30 is formed with ribs engaging a vertical recess in the cross head and said arm is clamped to the cross head by a clamping screw 32. The 'screw passes through a slot in the arm which permits the arm to be adjusted vertically on the cross head for settin the vertical position of the upper feed 0g. mounted on the vertical member 29 so as to slide freely up and down on said member. Thevertical member is formed with slots 33. On the opposite side of the vertical member 29 from the cross head 31 is a plate 34. Screw-s 35 pass through this plate and are threaded into the cross head. Spacing Washers36 prevent the plate from ipping the member 29 so that the cross ead together with the "plate slides freely up and down on the vertical member 29 which, as above noted, is a part of the bracket 15. The cross head is raised by an arm 37 which is pivoted at 38 to a bracket 39 and this bracket 39 is clamped to the cylinder work support by clamping screws 40. The arm 37 is connected'by a link 41 to an arm 42 which projects rearwardly from the feed rocker 17 and oscillates therewith. As the feed rocker is oscillated through its connection with the main shaft the arm 37- Will be positively raised and lowered. Inasmuch as the arm 42 extends rearwardly from the supporting shaft 18 the arm 37 will be lowered when the feed rocker at its oint of connection with the bracket 15 is raised. The arm .37 carries a link v43 which is pivoted thereto at 44. Said arm 37 has a projecting finger 45 which extends underneath this link 43. When the arm is raised the finger 45 will engage the link andlift the outer end of the link, the link and arm 37 then turning as one about the pivotal center 38. When, however, the -arm 37 is lowered the finger 45 may be moved away ,from the link 43, and the purpose thereof will be hereinafter described. The

The cross head 31 is outer end, of the link 43 is connected by another link 46 with the cross head 31, said link 46 being pivoted at 47 thereto. A plunger 48 is arranged directly over the link 46, (see Fig. 8). This plunger extends vertically through a sleeve 49, the

sleeve being carried by an arm formed integral with the bracket 39. Mounted in said sleeve is a spring 50. The upper end of this spring 50 bears against a cap 51 threaded into the upper end of the sleeve. The lower end of the spring bears against a collar 52 which is secured to the plunger 48. This plunger bears continuously on the link 46 and yieldingly forces the link downwardly.

When the feed rocker 17 is oscillated to bring the lower feed up into engagement with the material on the cylinder work support, the arm 37 will be lowered moving downwardly the finger 45 and this permits the plunger 48 to-yieldingly force the link 46 and the cross head to which it is connected downwardly thus bringing the upper feed dog into engagement with the materal. After the material has been gripped between the two feed dogs through this movement of the parts the lower feed dog-continues its upward movement and begins its feeding stroke, thus lifting the material clear of the throat plate and carrying it forward to posi- 'tion the same for the needle to again enter to form the next stitch. The continued upper movement of the lower feed dog through the swinging of the feed rocker moves the finger 45 downwardly further awaypfrom the link 43 and the plunger 48 will yield holding the upper feed dog yieldingly against the material but permitting it to raise with the lower feed dog. When the lower feed dog begins to descend the upper feed dog will move downwardly therewith placing the material on the work support and as the lower feed dog continues its movement the finger 45 will come into engagement with the-link 43 and positively raise the cross head liftin the upper feed dog from engagement with the material. While the feed dogs are gripping the material the bracket 15 which carries both feed dogs will be swung about the axis of the shaft 16. The axis of the shaft 16 when the feed dogs are in gripping engagement with the material is substantially coincident withthe center of the cylinder work supporting member and, therefore, the oscillating movements of the bracket 15 will cause the two feed dogs to move in a curved path conforming to the curvature of the throat plate so that although the throat plate is curved there is still a movement substantially the same as that imparted in the usual four motion feed dog in connection with a flat bed or work support.

It will be noted from above that I have moving the same to provided a feeding mechanism including both an upper and a lower feed dog wherein all the movements imparted to the feed dogs are derived from a feed shaft located in the cylinder work support and furthermore both feed dogs are raised and lowered by the same eccentric and both feed dogs are moved back and forth through the same crank. This crank is adjustably mounted on the end of the main shaft which provides for'the ready adjustment for varying the stroke of the feeding mechanism and the stroke of both feed dogs will'be simultaneously varied.

(Jo-operating with the throat plate is a presser foot 53. This presser foot is mounted on a presser bar 54 which is mounted to move vertically in the overhanging arm 3. The presser bar is normally forced downwardly by a spring 55 which is of the usual construction. Mounted to slide freely on the presser bar is a collar 55 having a forwardly extending lug 56. A link 57 is pivoted to this lug and extends vertically and is connected at its upper end to a rock lever 58.

The rock lever 58 is pivoted on a bracket 59 carried by the end of the machine. This rock lever is oscillated by a link 60 which is pivotally connected at one end to the rock lever and at its other end to a bracket 61 fixed to the'needle lever 6. As the needle lever 6 oscillates the rock lever 58 will be oscillated and this will raise and lower the movement on the. presser bar. Mounted on the presser bar is a fixed collar" 62.

This collar 62 is placed so that as the collar 55 moves upwardly it will engage the collar 62 and raise the presser foot. The parts are so timedthat the presser foot is raised from-the material just before the feed dogs begin their feeding stroke so that the material is free from the presser foot while the feed dogs have control thereof and are position the material for the next stitch.

(lo-operating with the needle beneath the work support is a looper 64 which is preferably {a thread carrying looper and of the usual type. The looper 64 is oscillated by a link 65 which is connected with the needle lever extension 66. The looper is pivotally pivoted thereto, (see Fig. 15).

dog is pivoted at 68 and is free to swing on its pivot in a clockwise direction until the-shank 69'of the foot engages the under face of the arm 30. This upper feed dog is formed on its under face with; a toothed section 70 which extends from the extreme front end to the rear end. of the dog. It is also formed with a knurled section, (see Fig. 12) which lies' along the side of the toothed section 70 and extends from the front end of thissection to the rear end thereof. The under face of the feed dog is curved, as above noted, about the center of the cylinder work supporting arm, when said feed dog is in engagement with the ma-' terial so that it substantially conforms to the curvature of the throat plate on which the material rests. The under face of the presser foot 53 is also slightly curved as indicated at 71, so as to conform to the curvature of the throat plate. This insures that thematerial clamped by the foot shall be firmly held .against the cloth plate.

The machine. to which my invention is applied is particularly well adapted for stitching abinding strip on the wristlet of a gauntlet. In Figsjl, 2 and 4 I have shown a binder 72 for directing a binding strip underneath the presser foot andto the stitching mechanism. This binder is carried by a shank 73 which is preferably ivoted at 74 to a bracket 75 which is secure byscrews 76 to a second bracket 77 and this second bracket 77 is pivoted at 78 to a supporting member 79 which is adjustably secured by screws 80 to the cylinder work support.

-These screws extend through slots which permits the bracket to be adjusted so as to move the binder in a direction at ri ht angles to .the line of feed. The bracket 7 may be swung about its pivot carrying with it the binder thus moving the parts away from the stitching mechanism when it is desired to use the same. A spring arm 81 operates to hold the second bracket 77 in normal position with the binder adjacent the stitching mechanism. The shank 73 may also be swun the binder from in 'front of the stitching mechanism when desired. As for example in the'finishing of the wristlet. Also supported by the shank which carries the binder is a guide plate 82. The wristlet of the gauntlet passes over this guide plate beneath the upper feed dog and the presser foot while the gauntlet is held in the air, so to speak, during stitching by the operator. The binding strip passes through the binder and underneath the presser foot and the binding strip is engaged only by. the knurled portion 71 of the upper feed dog.

The part of the under feed dog which cooperates with the knurled portion 71 is also constructed with much finer teeth so that the feeding mechanism engaging the binding strip will not injure the same, although it may be of more or less spongy material.

The main toothed sections of the, feed dogs -i engage the wristlet at one s ide of the binding strip. In Figs. 13 and 14 of the drawings I have shown more or less diagrammatically a gauntlet, indicated at W, .the

wristlet of which isbo'und by a binding in- 13 0 about the pivot 74-for withdrawing 105 dicated at B, the line of stitching being indicated at b. t

, It will be obvious that my improved feeding mechanism may, however, be used in other connections and also in other types of machines. A

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1. A sewing machine including in combination a work supporting cylinder,a shaft extending lengthwise thereof, a lower feed dog mounted in said cylinder, an upper feed do co-operating with the feed dog in the cyfinder, means operated from'an eccentric member on the shaft for moving both feed dogs back and forth and means controlled by an eccentric member on the shaft for moving said feed dogs into and out of engagement with the material.

2. A sewing machine including in combination a work supporting cylinder, a shaft extending lengthwise thereof, a lowerfeed dog mounted in said cylinder, an upper feed dog co-operating with the feed dog in the cylinder, means operated from an eccentric member on the shaft for moving both feed dogs back and forth and means controlled by an eccentric memberv on the shaft for moving said feed dogs into and out of engagement with the material, and means for adjusting the eccentric member moving the feed dogs back and forth for varying the feed stroke of the dogs.

3. A sewing machine including in combination a work sup-port having a curved throat plate, a feed dog beneath the work support having a toothed surface curved to correspond to the curvature of the throat plate, an upper feed dog above the work 'support and having its under face curved to conform to the curvature of the throat plate and means for operating said feed dogs causing the same to grip and feed the material said fee'd dogs being of substantially the same extent as to length.

4. A sewing machine including in com bination a work support having a curved throat plate, a feed dog beneath the work support having a toothed surface curved to correspond to the curvature ofthe throat plate, an upper feed dog above the. work support and having its under surface curved to conform to the curvature of the throat plate, means for operating said feed dogs causing the same to grip and feedthe material said feed dogs being of substantially cred thereby, a lower feed dog carried bythe bracket and means for rocking the bracket on the rocker for moving the lower feed dog back and forth, an upper feed dog carried by the bracket and movable back and forth therewith and means for raising and lowering the upper feed dog.

6. A sewing machine including in combination a work supporting-cylinder, acfeed' rocker located within said cylinder, means movements to the feed dog, means connect ed with the feed rocker for raising the up l per feed dog when the rocker is lowered and for lowering the upper feed dog when the rocker israised whereby said feed dogs 'are caused to grip and feed the material.

7. A sewing machine including in combination a work supporting cylinder, a horizontally disposed feed rocker therein, a vertically arranged bracket pivoted to the" feed rocker, a lower feed dog carried by the bracket said bracket having a vertically ex-.

tending member projecting above the work supporting cylinder, a cross. head slidable vertically on said member, an upper feed dog carried by said cross head, means for oscillating the bracket for imparting feed-, ing movements to the feed dog, a' spring for forcing the cross head downwardly and means operated by the feed rocker for raisingdthe cross head when said bracket is lowere 8. A sewin machine including in combination a wor supporting cylinder, *a horizontally disposed feed rocker therein, a vertically disposed bracket pivoted to the feed rocker, a lower feed dog carried by the bracket, said bracket having a vertical member extending above the work supporting cylinder, a cross head slidably mounted on said member, a feed dog carried by said cross head, an arm extending rearwardly from said rocker, a bracket attached to said work supporting cylinder, an arm pivoted to the bracket and connected to the arm on the feed rocker, a finger carried by said arm on the bracket, a link connected to the cross head and adapted to be engaged by the finger, a spring for forcing the cross head downwardly, said finger being disposed so as to positlvely raise the link and lift the .cross head when the bracket is lowered to move the lower feed dog out of engagement with the material and so as to permit the lower feed dog to raise the material and the upper feed dog. against the action of the. "spring during the feeding movement of the material.

9. A sewing machine including 1n combination a worksupport having a curved throat pla'te,'a horizontally disposed feed rocker beneath the work support, a verti cally disposed bracketpivoted to the feed rocker, a lower feed dog carried by the bracket, said bracket having an upwardly extending member, a cross head carried by said member, an upper feed dog carried by the cross head, said feed dogs being curved to conform to the curvature of the. throat plate and said feed rocker being so disposed that the pivotal connection between the rocker and" the bracket is substantially coincident with the center of curvature of the throat plate during the feeding movements of the feed dogs, means for moving the bracket to cause the feed dogs to feed the material and means for causing the upper feed dog to engage the material.

10. A sewing machine including in com bination a work support having a curved throat plate, a horizontally disposed feed rocker beneath the work support, a vertiof the feed dogs, means for moving the bracket to cause the feed dogs to feed the material, means for causing the upper feed dog to engage the material, said last named means being operated by said feed rocker.

11. A sewing bination a wor supporting cylinder, a main shaft extending lengthwise thereof, a horizontally disposed feed rocker, a vertically arranged bracket pivoted to the feed rocker, an eccentric on the main shaft for oscillating the feed rocker, an adjustable crank on the main shaft for ocillating the bracket, a lower feed dog carried by said bracket said bracket having a vertically extending mem ber, a cross head carried by said member, a feed dog supported by the cross head, means operated by the feed rocker for positively raising the cross head and a spring for lowering the cross head.

12.'A sewing machine including in combination a work supporting cylinder, a main shaft extending lengthwise thereof, a horizontally disposed feed rocker, a vertically arranged bracket pivoted to the feed rocker, an eccentric on the main shaft for oscillating the feed rocker, an adjustable crank on the main shaft for oscillating the bracket, a

lower feed dog carried by said bracket, said bracket having a vertically extending memmachine including in comher, a cross head carried bysaid member, a.

feed dog supported by the cross head, means operated by the feed rocker for positively raising the cross head, a fixed sleeve, a plunger in saidsleeve, a spring in the sleeve operating to force the plunger. downwardly said plunger being adapted to move the cross head downwardly when released by-its lifting means.

13. Asewing machineincluding in combination awork supporting cylinder, a main shaft extending lengthwise thereof, a hori? zontally disposed feed rocker in said cylinder, a vertically disposed bracket pivoted to the feed rocker, an eccentric on said shaft and devices controlled thereby for raising and lowering the feed rocker, an adjustable crank on said shaft and devices operated thereby for vibrating said bracket, a cross cylinder, an arm pivoted to said fixed bracket, an arm projecting rearwardly from the feed rocker, a link connecting said arm on the feed rocker with the arm pivoted to the fixed bracket, a link pivoted to the arm on the fixed bracket, said arm on the fixed bracket having a finger extending underneath the link for engaging and lifting the same, a connection between the link attached to the arm on the fixed bracket and the cross head, a sleeve carried by the fixed bracket, a plunger in said sleeve adapted to move the cross head downwardly and a spring in'the sleeve engaging the plunger.

14:. A sewing machine including in combination a work supporting cylinder, a lower feeddog in said cylinder, an upper feed dog engaging the material on the cylinder, means for operating the feed dogs, a presser foot for holding the material on the cylinder, a presser bar carrying the presser foot, a collar fixed to the presser bar, a collar freely mounted on the presser bar, means for raising and lowering said last named collar, said fixed collar being so disposed that the presser foot is raised by the movable collar during the feeding movements of said feed dogs.

15. A sewing machine including in combination a work support, an upper feed dog,

means for operating the upper feed dog, a presser foot, a presser bar on which the presser foot is mounted, a collar fixed to said presser bar, a collar slidable on the presser bar and means for sliding said collar to cause the same to engage' the fixed collar and raise the presser foot during the feeding movements of said feed'dog;

'16. A sewing machine, including m 'combination, a work support, stitch forming mechanism having .a needle, a feed dog, means for operating the feed dog to feed the material, a'binding guide forguiding the binding strip to the feed dog and needle,

said feed dog having a toothed portion located at one side of the needle and extend ing from front to rear of the feed dog, for

strip only.

17. sewing machine including in'combination, a work support, stitching mechanism having a needle, a lower feed dog, means for operating the same,- an upper feed dog, means for operating. the upper feed dog,- a binder for directing the binding strip between the feed dogs whereby said binding strip is stitched to thematerial, said feed dogs having coarse teeth disposed at one side of the needle so as to engage the mate-- rial only to which the binding strip is applied, and "relatively fine feeding teeth or surfaces in rear of the needle adapted toengage the binding strip only. i

18. A sewing machine includin in'combination a work supporting 'cylin er, an upper feed dog, a supporting arm to which said upper feed dog is pivotally connected, means for limiting the swinging movement of the feed dogon said arm, said feed dog having its under face curved to conform to the curvature of the work supporting cylinder, a needle, said feed dog having a section thereof projecting 'in front of the needle and 10- cated alongsideof the needle, a presser foot means for limiting the swinging movement pf the feed dog on said arm,"sa1d feed dog having its under face curved toconform to the curvature of the work supporting cylinder, a needle, said feed dog having a section thereof projecting in front of the needle and located alongside of the needle, a presser foot having a needle opening for the needle and locatedalongside of the said foot, said presser foot having the under face thereof curved to' conform to the curvature of the worksupportingxcylinder, a binder connected to said cylinder and disposed directly in front of the presser foot for directing a binding strip underneath the presser foot. n testimony whereof, I aflix my signature, in the 'presenceof two witnesses.

DUDLEY S. SEYMOUR. Witnesses:

S.-GEORGE TAT JAMES R. MOFFATT. 

